Commitments and Contingent Liabilities - Narrative (Details) $ in Millions	12 Months Ended
Sep. 24, 2023 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Construction and equipment, purchase commitments	$ 3.7

Represents purchase commitments for construction and equipment.

No definition available.

Name:	lee_ConstructionAndEquipmentPurchaseCommitments
Namespace Prefix:	lee_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration